华中科技大学学报（自然科学版）2025，Vol.53Issue(4)：8-14,7.DOI:10.13245/j.hust.250425
柱形装药水下爆炸近场荷载SPH数值模拟研究
SPH simulation on near-field underwater explosion load of slender explosives
摘要
Abstract
The Smoothed Particle Hydrodynamics(SPH)method was employed.An artificial viscosity term at the interfaces between axis of symmetry and fluid was introduced to enhance stability.Particle splitting and merging techniques were utilized to achieve uniform particle distribution,thereby constructing a high-precision axisymmetric SPH model.Based on this model,simulations of underwater explosions of cylindrical high-energy explosives with different length-to-diameter ratios were conducted.First,the convergence analysis was conducted and accuracy of the model adopted in this study was verified against experimental results.By comparing the near-field loads and the evolution of bubble shapes,good agreement was obtained between the SPH results and experimental data.Subsequently,the propagation of shock waves and the evolution of bubble shapes under various slender ratios were investigated.Computational results show that the near-field underwater explosion load of slender high-explosives exhibits directionality,with radial load greater than axial load,which significantly increases with increasing slender ratio.Due to the influence of the aspect ratio,the shape of the bubbles appears elliptical or spheroidal as well.As the aspect ratio increases,the volume per unit mass of the bubble decreases.关键词
水下爆炸/光滑粒子流体动力学/冲击波传播/轴对称模型/高能炸药Key words
underwater explosion/smoothed particle hydrodynamics(SPH)/shock wave propagation/axisymmetric model/high-energy explosive分类
力学引用本文复制引用
黄晓婷,孙鹏楠,邱艳宇,熊自明..柱形装药水下爆炸近场荷载SPH数值模拟研究[J].华中科技大学学报（自然科学版）,2025,53(4):8-14,7.基金项目
国家自然科学基金资助项目(52171329) （52171329）
爆炸冲击防灾减灾全国重点实验室资助项目(LGD-SKL-202201). （LGD-SKL-202201）
